Injector



[No Model.)

D. BEST.

v INJEGTOR. V No. 436,932. Patented Sept. 23, 1890.

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zs y 81VDWOL UNITED STATES PATENT OFFICEG DANIEL BEST, OF SANLEANDRO,CALIFORNIA.

INJECTOR.

SPECIEICATION forming part of Letters Patent No. 436,932, datedSeptember 23, 1890.

Application filed April 29, 1890. Serial No. 349,948. (No model.)

T0 all whom it may concern:

Be it known that I, DANIEL BEST, a citizen of the United States,residing at San Leandro, Alameda county, State of California, haveinvented an Improvement in Injectors; and I hereby declare the followingto be afull, clear, and exact description of the same.

My invention relates to animproved apparatus for injecting liquids; andit consists in the combination, with a jet-nozzle, of an inletsupply-pipe of peculiar construction.

Referring to the accompanying drawings for a more complete explanationof my invention, the figure is a.longitudinal section of the outercasing and jet-nozzle, with a view of the interior supply or inlet pipe,showing half of it in section.

A is the jet-nozzle, through which steam, air, or gas under pressure isadmitted, and B is an exterior casing, into one end of which this nozzleis fixed. At one side of the casing, near the nozzle, is an opening orpassage C for the admission of water. To the oppo site end of the casingis connected the pipe or passage D, through which the water is to beconveyed to any desired point by the momentum caused by the velocityimparted to it by the discharge from the jet-tube A. Between thispassage D and the jet-tube A and in line with it is a peculiarly-shapedpipe having different diameters or sections, as shown at E, E, and E Thesmallest section E, which is nearest to the nozzle A, has a sort ofbell-mouth opening, into which the nozzle A discharges, and at theopposite end this section is expanded, as shown at F, s0 as to connectwith the next section E of larger diameter. This expansion F is shown inthe present case as diverging or flaring like a bell-mouth, and throughit a number of holes or perforations Gr are made. The next section E isin like manner expanded or enlarged, as shown at F, and is -likewiseprovided with holes G, opening into its interior from the inside of theOuter casing B, into which the water is first admitted.

H are screw-threads formed upon the exterior of this tube, (shown in thepresent case at the point between the sections E and E and they fit incorresponding screw-threads I in the interior of the casing B, and bymeans of this device this peculiarnozzle or pipe may be screwed up ordown and adjusted with relation to the j et-nozzle A.

The operation will then be as follows: The jet of vapor being disohargedthrough the nozzle A with great Velocity, and water being admittedthrough the passage C into the casing B, will also enter the firstsection E, and the momentum acquired through the Velocity of the jet andthe weight of the water will cause it to be discharged through the'pipesE, E, E and D. A certain proportion of water will be drawn in throughthe holes Gr around the periphery of the enlargement F, and this waterbeing driven by the steamjet through the section E another portion ofWater will be drawn in through the openings G around the periphery ofthe enlargement F to be carried on through the section E and the pipe D.Asmany of these sections of increasing diameter with the intermediateopenings or holes may be made as will be found most desirable, and theobject is to admit the water in small quantity to the first section,where it is first acted on by the steam or vapor jet, and then, as thebody acquires a certain momentum, to admit an additional quantity ofwater at the next series of holes, which will be more readily carriedonward on account of the momentum already acquired by the body of wateradmitted through the first openings. In this manner I am enabled to workthe injector with more certainty and satisfaction than when the wholebody of water is admitted at one point, and the momentum must all beacquired at the point of the first impact of the steam-jet upon the bodyof water.

The successive aldditions to the body of water gradually increasing itto the full amount desired are features of my invention.

The device here shown is also useful as a blast apparatus.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is-

An njector consisting of a casing having a jet-nozzle fixed at one endand inline With the axis of the casing and a discharge-pipe connectedwith the opposite end, an inlet-passage adjacent to the jet-nozzle, incombina tion With the pipe formed in a single piece and upon theexterior of this pipe, Whereby and in sections increasing in diameterfrom the latter may be adjusted within the casing one end to the otherand forming shoulders and With relation to the jet-nozzle, substanoroffsets at their points of j unction, a belltially as herein described.

5 mouth opening at the end of the smaller sec- In witness whereof I haveherennto set my 15 tion into which the j et-noz zle discharges, holeshand. or perforations made through the offsets or DANIEL BEST. shouldersexterior to each small section and Witnesses: opening into the largersection beyond, and WILLIAM V. REID, 10 screw'threads in the interior ofthe casing GEO. S. SCOTT.

